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-rw-r--r--debug/backtracesyms.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/debug/backtracesyms.c b/debug/backtracesyms.c
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--- /dev/null
+++ b/debug/backtracesyms.c
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+/* Return list with names for address in backtrace.
+ Copyright (C) 1998, 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <execinfo.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+/* Assume the worst for the width of an address. */
+#define WORD_WIDTH 16
+
+
+char **
+__backtrace_symbols (array, size)
+ void *const *array;
+ int size;
+{
+ int cnt;
+ size_t total = 0;
+ char **result;
+
+ /* We can compute the text size needed for the symbols since we print
+ them all as "[+0x<addr>]". */
+ total = size * (WORD_WIDTH + 6);
+
+ /* Allocate memory for the result. */
+ result = malloc (size * sizeof (char *) + total);
+ if (result != NULL)
+ {
+ char *last = (char *) (result + size);
+
+ for (cnt = 0; cnt < size; ++cnt)
+ {
+ result[cnt] = last;
+ last += 1 + sprintf (last, "[+%p]", array[cnt]);
+ }
+ }
+
+ return result;
+}
+weak_alias (__backtrace_symbols, backtrace_symbols)